diff --git a/Dockerfile b/Dockerfile
index 3e4e686..f952a02 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,7 @@ RUN stack build
 
 RUN cp $(stack exec -- which cl8w-exe) cl8w
 
-FROM ubuntu:18.4
+FROM ubuntu:18.04
 
 ENV HOME=/home/app
 WORKDIR $HOME